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Message: <blockquote data-quote="Hand of Evil" data-source="post: 5279190" data-attributes="member: 371">About the under-city - there is more than just the sewers, and there are levels to each one.  <ul> <li data-xf-list-type="ul">Level 1 - 5 to 10 feet down, basements. Normal stuff for the most part but what people don't realize is that basements in a city may lead to other places.  You can have tunnels that go under the street to connect to another basement but some lead to maintenance tunnels.</li> <li data-xf-list-type="ul">Level 2 - 10 to 20 feet down, Maintenance.  This is a network of tunnels that allow workers to move goods.  Today, this is forgotten but at one time common, it allowed goods to be moved without blocking streets nor being exposed to weather.  They run from the waterfronts to all parts of a city, where the goods would then be placed in basements.  </li> <li data-xf-list-type="ul">Level 3 - 15 to 30 feet down, Runoff & Cisterns.  Fresh water is important to a city but you have control the flow and that is what this level does.  Rain water may be directed to Cisterns and some will be to the sewers.  Normally it is roof pipes that feet this level.</li> <li data-xf-list-type="ul">Level 4 - 15 to 40 feet down, Sewers.  Yep, this is the waste removal area of a city.  Street runoff feeds this.</li> <li data-xf-list-type="ul">Level 5 - 10 to 150 feet down, Ruins.  Things are built on older sites.  </li> </ul>See:<a href="http://www.history.com/shows/cities-of-the-underworld/videos#cities-of-the-underworld-draculas-underground" target="_blank">Cities Of The Underworld — History.com Videos</a>Also a site that I always found cool:<a href="http://en.wikipedia.org/wiki/Wieliczka_Salt_Mine" target="_blank">Wieliczka Salt Mine - Wikipedia, the free encyclopedia</a>Also World Heritage sites from Europe - just nice list <a href="http://en.wikipedia.org/wiki/List_of_World_Heritage_Sites_in_Europe" target="_blank">http://en.wikipedia.org/wiki/List_of_World_Heritage_Sites_in_Europe</a>Another:<a href="http://en.wikipedia.org/wiki/Worsley_Navigable_Levels" target="_blank">http://en.wikipedia.org/wiki/Worsley_Navigable_Levels</a></blockquote>

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